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Finding the Fourth Proportional to 438,615, 605,288.70 and 237,411

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Solution

The fourth proportional to 438,615, 605,288.70 and 237,411 is: 327,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,615 : 605,288.70 = 237,411 : x
  2. Step 2: Convert to fraction form
    438,615/605,288.70 = 237,411/x
  3. Step 3: Cross multiply
    438,615x = 605,288.70 × 237,411
  4. Step 4: Simplify right side
    438,615x = 143,702,195,555.70
  5. Step 5: Solve for x
    x = 143,702,195,555.70/438,615
  6. Step 6: Final answer
    x = 327,627.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.